Automatic control for vacuum-pumps or the like.



F. R. PERRY. AUTOMATIC CONTROL FOR VACUUM PUMPS 0R THE LIKE.

APPLICATION FI'LED OCT- 30. I911.

Patented Mar. 11, 1919.

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' r FRANK It. many, or CHICAGO, ILmnoIs.

7 Specification of Letters Patent.

Application filed October 30, 1917. Serial No. 199,250.

To all cchom it may concern:

Be it known that I, FRANK R. PERRY, a citizen of the United? States," residing at Chicago, in the county of 'Cook and State Jof Illinois, have invented certain new and useful Improvements in Automatic Controls for Vacuum-Pumps or the like, of

7 which the following is a description.

My invention belongs to that general class of devices known as automatic controls for vacuum pumpsand relates par- 7 ticularly to an apparatus adapted to be used in connection with thepumping' or causing afflow of a liquid or fluidby means of a vacuum. It is customary in the case of combustion engines where the fuel tank is below'the carburetor so that the fuel will not flow by virtue of gravity to the carbureter, to provide means for producing a How of the fuel. In some cases this is done in what is known. as the pressure feed, and more'commonly it is done by employing what is known as the vacuum feed system.

In the latter system the fuel is drawn by means of a vacuum into an auxiliary tank and'fed by gravity to the carbureter. A vacuum is produced in the system by means of a vacuum, pump or by tapping on to the manifold or to one of the cylinders. My apparatus particularly relates to a simple mechanism for periodically breaking or controlling. the vacuum so that the pumping is intermittent and not continuous. The invention has among its objects the production of: an apparatus of the kind described that is simple, compact, durable, eiiicient and V satisfactory. for use wherever found applicable. It has especially as an object the production of adevice of the kind described that does not require a float or nu merous springs, levers and the like necessitating consequent fine ad ustments. It also has as an object the production of a device that will not become inoperative in case allf ofthe fuel is pumped out of the main tank and which, does not at any time require priming. I Many other objects and advantages will be obvious to those skilled in the art from the disclosure'hereingiven.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and describedand more particularly pointed out in the claims.

' 5 In the drawings, wherein like reference characters indicate like or corresponding parts, 7 Figure 1 is a sectional view through my improved device; and V Fig. 2 is a cross sectional view taken substantially on line 22 of Fig. 1.

Referring to the drawings, 1 represents a casing of suitable size, shape and material which is preferably flanged at 2 about the top. .Arranged within the casing 1 is a shell 3 also of suitable size, shape and material formed with a bottom and also preferably flanged about the top at 41. A closure 5 is provided and the parts 1, 3 and 5 secured together by bolts 6 or equivalent means for the purpose, suitable packing or gaskets, however, being arranged between the flanges2 and 1 and closure 5 so as to provide a tight fit. The parts'l and 2 form substantially chambers A (vacuum chamberland B' (fluid chamber). Asshown, I provide a part 7 having the branch pipes 8 and 9, the same being constructed so that the same communicatewith the chamber 13. One part Sis arranged to be connected to a pipe 10 and the other to a pipe '11, the pipes being connected one to a vacuum pump or the equivalent and the other to a vacuum tank or auxiliary receptacle as it may be termed for the-storing of a supply of fuel orthe like.

As most clearly shown in Fig. 1, the chambers A and C are connected by an top of the cup shaped part 16 andthe bottom of shell 3, which is substantially the top of chamber A. The cup'shaped shell 16, constituting a chamber 0, is provided with a pipe 1920, the same constituting a siphon pipe with the end 19 below the end 20. I prefer to provide a pocket at the ends of pipe 20 by forming, the bottom of 16 as most clearly shown in Fig. 1,,so that the end of pipe 20 projects below the bottom of theshell 16. I also provide a pipe 22 extending from the bottom of the chamber A up into the chamber B, the upper end 23 being bent Patented Mar. 11, 1919.

' NITE STATES PATENT F I V B will also maintain valve 15 closed.

stantially below the bottom of the chamber A. Chamber A is provided with a vent opening 25 through which air may enter or be discharged from the chamber. n

I' consider it unnecessary to show or describe in detail the auxiliary receptacle with which my apparatus is connected as this may be of any desired construction. I might say, however, that I prefer to maketlie samesubstantially similar to my apparatus shown in Fig. 1, except that the piping 19-20 and 22'23, as well as the cup shaped shell 16 are omitted. Also, the chamber corresponding tochamber A is provided with a discharge outlet fromwhich a pipe extends to the carbureter. The construction will be obvious. The upper'end can be connected with the-main gas tank and with one of the pipes 9 or 8 of the apparatus shown in Fig: 1. a

The operation of the apparatus shown herein may be briefly described as follows The'desired amount of glycerin, lubricating oil'or the equivalent is placed in my device as shown in Fig. 1, so that the same if 0011- finedin the chamber C or container of the part 16 would come substantially to the level indicated by the dotted line L. Assuming that the same is originally poured in chamber B, it will flow through'the opening 12 .past' valve 15 and into container 16 until it' reaches the bend in pipe l920, through which it will siphon over into chamber A. If a vacuum is now produced in chamber B, for example by, connecting pipe 10 to a vacuumpump or to the engine manr 7 fold, the oil or fluid in chamber A will be drawn up through pipe 22 and discharged into chamber B, but the vacuum in chamber The lower end ofipipe 22 being in the fluid, the

'same forms a seal about the end of the pipe so that the airentering vent 25 cannot pass up'pipe 22 into chamber B- until all of the fluidin the chamber has been drawn into chamber B, after which air will enter chamber B through pipe 22 and the vacuum will be" broken. While there is a vacuum in chamber B there is likewise a vacuum in is again produced in chamber B, The operations described continue, the fuel being intermittently drawn into the auxiliary fuel tankto be discharged into the carbureter.

As soon 1 as-thesame is siphoned into chamber A the lowerend of pipe 22 is sealed and a vacuum Havin thus described my invention, it is obvious that various immaterial modifications may be Ima'de in the same without departing froni the spirit of my invention; hence l-do not'wish-tobe understood as limiting myself to the exact form, construction, arrangements and combination of parts herein shown and described or" uses men:

'tioned;

lVhat I claim as new and desire to secure by Letters Patent is o 1. A fluid containing receptacle having two chambers therein, piping connected with and extendmg'to'and from one of; said chambers, one chamber havlngla discharge outlet into the-second chamber,'a.valve'arranged at said outlet, means for conducting fluid from adj acent the bottom of thesec'ond s ot mentioned chamberto the first chamber, said second chamber provided witha vent near the upper part thereof to the exterior of 7 the receptacle, and means arranged betweenj' the said outlet and the entrance end of said" conducting means for receiving the "contents of the first mentioned receptacle discharged through said outlet and discharging. same into thesecondchamber." 1 r V V j 2. A fluid containing receptacle havingtwo chambers therein, piping connected with and extendingto and from one of said cham'beraone chamber having a discharge the outlet into the second chamber, a check valve 7 arranged at said outlet, means'for conducting fluid from adjacent the-bottom' of the' second mentioned chamber to the first cham ber, said second chamber provided with a vent near the upper part thereof to theexterior of the receptacle, and means arranged between the said outlet and the entrance end of said conducting means for receiving.

the contents of the first mentioned receptacle discharged through said outlet and there-1 after automatically discharging the same after-a predetermlned interval into the second chamben V 3. A fluid containing receptacle having two chambers therein arranged one above the other, piping connected with and extending to and from the upper chamber, said upper chamber having a discharge outlet c0mmunicating with the lower chamber, a pipe extending from adjacent the bottom of the lower chamber to the upper chamber above the bottom thereof, said lower chamber having a vent opening adjacent the'upper part thereof, and means arranged' betwe'en the upp r c a b h vi g a discharge outlet communicating with the lower chamber, a pipe extending from adjacent the bottom of the lower chamber to the upper chamber above the bottom thereof, said lower chamber having a vent opening adjacent the up per part thereof, and means arranged between the said outlet from said upper chamber and the entrance end of said pipe for retarding the flow of fluid from said outlet to the entrance end of said pipe comprising a container arranged in the lower chamber provided with means for discharging the contents of the container.

5. A fluid containing receptacle having two chambers therein arranged one above the other, piping connected with and extending to and from the upper chamber, said upper chamber having a discharge outlet communicating with the lower chamber, a check valve arranged at said outlet, a pipe extending from adjacent the bottom of the lower chamber to the upper chamber above the bottom thereof, said lower chamber having a vent opening adjacent the upper part thereof, and means arranged between the said outlet from said upper chamber and the entrance end of said pipe for retarding the flow of fluid from said outlet to the entrance end of said pipe comprising a container ar ranged in the lower chamber provided with means for automatically discharging the contents of the container whenthe contents reach a predetermined level in the container.

6. A fluid containing receptacle provided with two chambers arrangedone above the other, piping'connected with and extending to and from the upper chamber, said upper chamber having a discharge outlet into the lower chamber, a valve arranged at said outlet, means for conducting fluid from the lower chamber to the upper chamber con sisting of a pipe extending from adjacent the bottom of the lower chamber to the up per part of the upper chamber, said receptacle provided with a vent opening for sald lower chamber, a container for the fluid discharged through said upper chamber outlet, said container arranged ,within the lower chamber, and means for siphoning out the contents of said container into the lower chamber when the same reach a predetermined level in the container.

7. A receptacle constructed with a vacuum chamber and a fluid containing chamber and having a valved discharge outlet from the vacuum chamber into the fluid chamber, piping means connected with said vacuum chamber, said receptacle provided with a vent opening from said fluid chamber, a cup shaped container arranged within the fluid chamber below said outlet from said vacuum chamber, and means for periodically completely emptying said chamber when the fluid therein reaches a predetermined level, and a pipe extending from said vacuum chamber to adjacent the bottom of the fluid chamber.

8. In a device of the kind described and in combination, a receptacle substantially constructed with three chambers, a port connecting the first and second chambers provided with a gravity valve normally closing said port and opening into the second chamber, piping means extending to and from,

said first chamber, a siphon connecting the second chamber with the third chamber, and a pipe connecting the third chamber with the first chamber, said third chamber having a vent opening adjacent the top connecting the interior with the exterior of the receptacle.

9. In a device of the kind described and in combination, a' fluid receptacle constructed with two chambers arranged one above the other, piping means connected .with the receptacle and communicating with the upper chamber, said upper chamber having an outlet into the lower chamber, a check valve arranged at said outlet normally closing said outlet and opening into the lower chamber. and a discharge pipe from said lower chainher and leading to the upper chamber.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

FRANK R. PERRY.

Witnesses:

ROY -W. HILL, CHARLES I. COBB.

Copies ,of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

